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    <title>Document</title>
    <script>
        //格式化日期  时分秒
        var date = new Date();
        console.log(date.getHours());//时
        console.log(date.getMinutes());//分
        console.log(date.getSeconds());//秒
        //要求封装一个函数返回当前的时分秒 格式 08：08：08
        function getTimer() {
            var time = new Date();
            var h = time.getHours();
            h=h<10?'0'+h:h;
            var m = time.getMinutes();
            m=m<10?'0'+m:m;
            var s = time.getSeconds();
            s=s<10?'0'+s:s;
            return h+':'+m+':'+s;
        }
        console.log(getTimer());
    </script>
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